Washer for metallic bungs.



ALFRED JAMES SHONE, OF ROCHESTER, NEW YORK.

WASHER FOR METALLIC BUNGS.

Specification of Letters Patent.

Application filed March 5, 1907.

Patented Dec. 22, 1908.

Serial No. 360,668.

To all whom it may concern:

Be it known that l, ALFRED JAMES SHoNn, a citizen of the United States, residing at Rochester, in the county of Monroe and State of New York, have invented new and useful lm rovements in Washers for Metallic Bungs, ofPwhich the following is a specification.

This invention relates to washers for metallic bungs, and it has for its object to provide a device of this class which shall be capable of ready application to the bung in question; which, when the bung is seated, shall form an absolutely tight joint; and which shall possess superior advantages in point of simplicity and general eiiciency.

With these and other ends in view which will readily appear as the nature of the invention is better understood, the same consists in the improved construction of said washer and the manner of ap lying the same to a metallic bung which i be hereinafter fully described and particularly pointed out in the claim.

In the accom anying drawing has been illustrated a simp e and preferred form of the invention; it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of the invention may be resorted to when desired.

ln'the drawings, Figure 1 is a perspective view showing the improved washer detached from the bung. Fig. 2 is an inverted plan view of a bung having the washer applied thereto, previous to seating or tightening the bung. Fig. 3 is a similar view showing the washer after the bung has been tightened. Fig. 4 is a sectional elevation showing a bung having the im roved washer ap lied thereto in osition in t e wall of a vessel) previous to tig tening the bung. Fig. 5 is a view similar to Fig. 4 but showing the position of the parts after the bung has been tightened.

Corresponding arts in the several figures are denoted by li ie characters of reference.

1 designates a metallic bung of conventional construction, the same consisting of a cylindrical body rovided at its inner end with threads 2 or engagement with the threaded aperture 3 in the wall of a storage vessel or other element 4 to which the bung is to be applied said bung being provided at its opposite or outer end with an annular flange 5.

The improved washer 6 is composed of a length of wirel of soft metal, such as lead or any suitable alloy in applying this washer to the bung, previous to tightening the latter, the wire is bent annularly around the cylindrical body of the bung, in the angle between said body and the flange 5 at the outer end of the latter; one end of the wire is permitted to extend slightly in a radial direction from the body of the wire, as will be clearly seen at 7; the other terminal of the ring or annulus forming the wire being extended across the radially extended portion 7 and bent slightly adjacent to said radial arm, thusY forming a lock that will hold the washer in position with sufficient security for all practical purposes; the ends of the wire formin the washer may be chipped 0E with a chise or in any suitable manner. It will be evident that the inner terminal 8 of the wire constituting the washer is to be extended across the radial arm or portion 7 in a direction oCpposite to the lead of the screw threads 2, an opposite to that in which the bung is turned in ti htening the same, so that the tightening o the bung will have a tendency to tighten the washer. Y

When the bung having the washer applied thereto is tightened in the stud, bushing, or threaded aperture to which it is applied, the wire constituting the washer will be squeezed perfectly flat, and the soft metal of which it is composed will be expanded into the crevices between the bung and the bushing, completely filling all such crevices and making an absolutely tight joint. The terminal end 8 crossing the radial ortion 7 of the washer wire will be squeeze into said radial ortion, as will be best seen by reference to ig. 3 of the drawings, which shows the washer upon the bung after the latter has been tightened and again detached from its bushing.

Practical experience with this class of devices has demonstrated that when ordinary soft metal washers are used, the tightening of the bung will cause such washers to be expanded in an outward direction, and not into the crevices between the bung and the bushing, thus frequently failing in forming a erfectly air and liquid tight joint 5 on the ot er hand, it has been found by extensive experimentation with the improved washers herein described that, when properly secured in the manner herein shown and specified, they never fail to effect an absolutely tight joint.

I-Iaving thus fully described the invention, what I claim as new is In combination with a metallic bung have ing an enlarged screw threaded portion at its inner end and a Ilange at its outer end, a split sealing washer com rising a length of soft metal wire, of circullar form throughout in cross-section, wound about the body oi the bung adjacent to the flange thereof, one of the ends of said washer being bent outward radially and Jforming a straight arm bearing at its outer side against said flange and the other end of the washer being bent outward at an oblique angle and into hook form to overlie said arm, whereby the ends of the washer are loosely engaged to prevent separation thereof while permitting relative movement of said ends to adapt the washer to be attened out under pressure between the liange and wall of the bung hole when the bung is screwed home and also to adapt the ends to be mashed into a flat joint by such pressure, the convex side of the hooked end being arranged to bear against the outer thread of the threaded inner end, whereby the washer will be held from slipping around the body in the operation of applying the same by the frictional engagement of the washer with the body, screw-threaded portion and iiange ot the bung, substantially as described. v

In testimony whereof, I aHiX my signature in presence of two witnesses.

ALFRED JAMES SHONE.

Witnesses:

CHARLES E. SHONE, DAVID FARNHAM. 

